I think something is wrong with my brain?

i started noticing frequent headaches about a month ago and they are getting worse and worse. i had a seizure last week but i dont have like epilepsy or anything. my friends also said ive been getting really angry lately. i also feel a ton of pressure in my head. i play baseball and recently it seems like i cant hit the ball at all, its like i lost complete coordination. whats wrong with me?? i cant take it anymore.. am i depressed? lack of sleep.. idk